#include"Shape.h"
#include"CTriangle.h"
#include"CRectangle.h"
int main(){
    CRectangle rect(4,5);
	CTriangle trgl(4,5);
	cout << "area: " << rect.area() << endl;
	cout << "area: " << trgl.area() << endl;
	system("pause");
	return 0;
}